How To Fix UC901 - Receiver structure for sender structure &1 cannot be determined

SAP Error Message - Details

• Message type: E = Error

• Message class: UC - FI/CO Data transfer: errors during transfer

• Message number: 901

• Message text: Receiver structure for sender structure &1 cannot be determined

What causes this issue?

The receiver structure cannot be read from the ABAP Dictionary.

System Response

The rules for the sender structure cannot be converted.

How to fix this error?

Check whether the ABAP Dictionary structure for the receiver is active
and saved in the ABAP Dictionary. If not, activate and save it. Then
execute program RKCXPR40 again.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message UC901 - Receiver structure for sender structure &1 cannot be determined ?

  The SAP error message UC901, which states "Receiver structure for sender structure &1 cannot be determined," typically occurs in the context of data transfer processes, particularly when using the SAP Process Integration (PI) or SAP Process Orchestration (PO) systems. This error indicates that the system is unable to find a corresponding receiver structure for the specified sender structure in the mapping configuration.
  Causes:
  
  Missing Mapping Configuration: The most common cause is that there is no mapping defined for the sender structure in the Integration Directory or the mapping program.
  Incorrect Sender Structure: The sender structure specified in the error message may not be correctly defined or may not exist in the system.
  Version Mismatch: There may be a version mismatch between the sender and receiver structures, leading to the inability to determine the correct mapping.
  Transport Issues: If the mapping was recently transported from one system to another, it may not have been properly activated or may be missing.
  Namespace Issues: The sender structure may be in a different namespace than expected, causing the mapping to fail.
  
  Solutions:
  
  
  Check Mapping Configuration:
  
  Go to the Integration Directory and verify that there is a mapping defined for the sender structure. Ensure that the mapping is active and correctly configured.
  If necessary, create or adjust the mapping to ensure that it correctly corresponds to the sender structure.
  
  
  
  Verify Sender Structure:
  
  Check the sender structure in the relevant data model or schema to ensure it is correctly defined and exists in the system.
  Ensure that the sender structure is being used correctly in the message flow.
  
  
  
  Check for Version Compatibility:
  
  Ensure that the versions of the sender and receiver structures are compatible. If there are changes in the structure, update the mapping accordingly.
  
  
  
  Transport and Activation:
  
  If the mapping was recently transported, ensure that it has been activated in the target system. Check for any transport errors that may have occurred.
  
  
  
  Namespace Verification:
  
  Verify that the namespaces for the sender and receiver structures are correctly defined and match the expected values in the mapping.
  
  
  
  Debugging:
  
  If the issue persists, consider enabling logging or debugging in the PI/PO system to gather more information about the error and identify the root cause.
  
  
  
  Related Information:
  
  SAP Notes: Check SAP Notes related to UC901 for any specific patches or updates that may address this issue.
  Documentation: Review the SAP documentation for Process Integration and mapping to ensure that you are following best practices.
  Community Forums: Engage with SAP community forums or support channels for additional insights and solutions from other users who may have encountered similar issues.
  
  By following these steps, you should be able to identify and resolve the cause of the UC901 error in your SAP system.